The SP101 is not a range gun. It's a CCW gun. As such, shooting comfort is low on the priority list. The 357MAG is a powerful round and the SP is a small gun. The results are obvious. Using different grips such as Hogue will help felt recoil but they can't change basic physics.
Shooting .44MAG will create even more recoil obviously. So the weight and design of the gun will have a direct impact on how much felt recoil there will be. A Ruger Alaskan will be much different than a Super Blackhawk. It depends on what you're needs are: range, hunting, CCW.